⇒ fun software

Genesis Plus 1.2.9 http://www.versiontracker.com/dyn/moreinfo/macosx/16786

more links:
http://www.pure-mac.com/emu.html
http://emulation.victoly.com/
sixtyforce- N64 emulator http://www.sixtyforce.com/
MacMAME- MAME emulator http://www.macmame.org/
Snes9- SNES emulator http://www.snes9x.com/

http://www.bannister.org/software/emu.htm

Arnold v1.7.6 - Amstrad CPC/CPC+ Emulator
Boycott Advance v0.3.8 - Nintendo Gameboy Advance Emulator
BSNES v0.1.7 - Nintendo SNES Emulator (Requires G5)
fMSX v3.0.2 - MSX1/2/2+ Emulator
Frodo v4.3.8 - Commodore 64 Emulator
Generator v0.4.2 - Sega Megadrive/Genesis Emulator
Genesis Plus v1.2.8 - Sega Megadrive/Genesis Emulator
Handy v0.9.5 - Atari Lynx Emulator
Horizon v1.3.7 - BBC Model B Emulator
Jum52 v0.8.8 - Atari 5200 Emulator
KiGB v2.0.3 - Nintendo Gameboy Emulator
MO5 v2.6.1 - Thomson MO5 Emulator
Mugrat v0.4.1 - Colecovision Emulator
Neopocott v0.4.9 - Neo Geo Pocket Colour Emulator
Nestopia v1.3.6 - Nintendo NES Emulator
O2Em v1.0.9 - Odyssey^2 Emulator
Oric v1.7.6 - Oric 1/Atmos Emulator
Oswan v0.7.7 - Wonderswan Emulator
Rainbow v1.5.5 - Atari 800 Series Emulator
SimCoupe v0.8.1 - Spectrum SAM Coupé Emulator
SMS Plus v1.3.0 - Sega Master System/Game Gear Emulator
TEO v1.8.0 - Thomson TO8 Emulator
TGEmu v0.3.2 - NEC PC Engine Emulator
Thom v1.5.9 - Thomson TO7 Emulator
Vecx v0.1.4 - GCE Vectrex Emulator
ViBE v1.0b8 - Nintendo Virtual Boy Emulator

PS3 controller usage on Mac OS X
http://tattiebogle.net/index.php/ProjectRoot/Ps3Controller
And button mapping:

#1 = SELECT
#2 = L3
#3 = R3
#4 = START
#5 = DPAD UP
#6 = DPAD RIGHT
#7 = DPAD DOWN
#8 = DPAD LEFT
#9 = L2
#10 = R2
#11 = L1
#12 = R1
#13 = Triangle
#14 = Circle
#15 = X
#16 = Square
#17 = PS Button
#18-19 = nothing

♥♣♦♠